Viscosity of aqueous solutions of TlNO3, Tl2SO4 and TlOH at 25°C

Abstract

The B-coefficient of the thallous ion has been determined by measuring the viscosities of TlNO₃, Tl₂SO₄ and TlOH solutions and making allowance for the formation of ion pairs. The value found, –0.017 dm³ mol^–1, is close to what might be expected on consideration of the standard absolute entropy of the thallous ion. Values of the B-coefficients of the TlSO₄^–, TlOH and TlNO₃ ion pairs are shown to be very similar to those of the corresponding free ions.